CN103857448A - Defroster for oxygen liquefier - Google Patents

Defroster for oxygen liquefier Download PDF

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Publication number
CN103857448A
CN103857448A CN201280013173.6A CN201280013173A CN103857448A CN 103857448 A CN103857448 A CN 103857448A CN 201280013173 A CN201280013173 A CN 201280013173A CN 103857448 A CN103857448 A CN 103857448A
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China
Prior art keywords
oxygen
module
pipeline
air
oxygen pipeline
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Granted
Application number
CN201280013173.6A
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Chinese (zh)
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CN103857448B (en
Inventor
L·布罗凯雷
B·E·迪克森
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Koninklijke Philips NV
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Koninklijke Philips Electronics NV
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F25J1/0017—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/10—Arrangements for preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0203—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
    • F25J1/0204—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a single flow SCR cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0244—Operation; Control and regulation; Instrumentation
    • F25J1/0245—Different modes, i.e. 'runs', of operation; Process control
    • F25J1/0248—Stopping of the process, e.g. defrosting or deriming, maintenance; Back-up mode or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0262—Details of the cold heat exchange system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0443—Flow or movement of content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/02—Applications for medical applications
    • F17C2270/025—Breathing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/40—Processes or apparatus using other separation and/or other processing means using hybrid system, i.e. combining cryogenic and non-cryogenic separation techniques
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2245/00—Processes or apparatus involving steps for recycling of process streams
    • F25J2245/40—Processes or apparatus involving steps for recycling of process streams the recycled stream being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/44—Particular materials used, e.g. copper, steel or alloys thereof or surface treatments used, e.g. enhanced surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

An oxygen liquefier system may be configured to defrost an oxygen line included therein. The system may include one or more sieve beds, a liquid oxygen reservoir, an oxygen line, a controller, a heating apparatus, and/or other components. The one or more sieve beds are configured to extract oxygen from air obtained from an ambient environment. The liquid oxygen reservoir is configured to store oxygen extracted at the one or more sieve beds that has been liquefied. The oxygen line is configured to provide fluid communication between the one or more sieve beds and the liquid oxygen reservoir. The controller is configured to detect a blockage caused by frozen liquid within the oxygen line based on a liquid oxygen production rate. The heating apparatus is configured to defrost the oxygen line to melt frozen liquid within the oxygen line responsive to the detection of the blockage.

Description

For the thawing apparatus of Oxygen liquefier
The cross reference of related application
The senior interest of the application number that present patent application requires to submit on March 14th, 2011 U.S. Provisional Application that is 61/452206, at this by reference to the content of this U.S. Provisional Application is incorporated to.
Technical field
The disclosure relates to thaws to the assembly of Oxygen liquefier, and is particularly related to the oxygen pipeline in oxygen concentrator and liquefier system is thawed, so as to remove in oxygen pipeline for example, by the caused all or part of obstruction of frozen liquid (water).
Background technology
It is known that oxygen and other gas are liquefied.Can depress much gas is become to liquid condition at normal atmosphere by simple cooling; Some also needs pressurization, as carbon dioxide.Some gas liquefaction devices depend on the lack of moisture for the treatment of in liquid gas conventionally.Some are used for dewatered standard technique and comprise and use film, absorption, absorption and/or low temperature distillation.
But, directly may still contain traces of moisture from the oxygen of standard pressure-variable adsorption (PSA) system as oxygen concentrator.Under certain situation, for example, traces of moisture may have the dew point of approximately-60 DEG C.As a result, during the liquefaction of the oxygen from PSA system, ice may form in gas line, thereby limits or stop up Oxygen Flow, and/or serves as the effect of the heat guard that reduces heat exchanger effectiveness.
Summary of the invention
Therefore, the one side of one or more embodiment provides a kind of for operating the method for oxygen concentrator and liquefier system.The method comprises that the one or more sifting beds of use extract oxygen from air, and this air is to obtain from surrounding environment.The method comprises and will be delivered to liquid oxygen holder via oxygen pipeline at the oxygen of this one or more sifting beds place extraction.The oxygen extracting at one or more sifting beds place is liquefied between these one or more sifting beds and liquid oxygen holder.The method comprises thaws to oxygen pipeline, to melt the frozen liquid in oxygen pipeline.
The another aspect of one or more embodiment provides a kind of oxygen concentrator and liquefier system, and this system is configured to thaw to being included in one or more oxygen pipeline.This system comprises one or more sifting beds, liquid oxygen holder, oxygen pipeline and heater.Described one or more sifting bed is configured to extract oxygen at the air from being obtained from surrounding environment.Described liquid oxygen holder is configured to be stored in the oxygen being liquefied that one or more sifting beds extract.Oxygen pipeline is configured to provide the fluid between one or more sifting beds and liquid oxygen holder to be communicated with.Heater is configured to oxygen pipeline to thaw, to melt the frozen liquid in oxygen pipeline.
The another aspect of one or more embodiment provides a kind of oxygen concentrator and liquefier system, and the oxygen connectivity module that this system is configured to being included in is wherein thawed.This system comprises extraction module, storage module, oxygen connectivity module and heating module.This extraction module extracts oxygen for the air from being obtained from surrounding environment.Storage module is to be stored in the oxygen being liquefied that extraction module extracts.Oxygen connectivity module is for providing the fluid between described extraction module and described storage module to be communicated with.Described heater is used to oxygen connectivity module and thaws, to melt the frozen liquid in oxygen connectivity module.
After the description and claims below accompanying drawing research, these and other objects of the present invention, feature and characteristic, and the function of the related elements of the method and structure of operation, and the combination of parts and the economy of manufacture will become clearer, institute's drawings attached has formed the part of this description, and wherein in each accompanying drawing, identical Reference numeral represents corresponding parts.But should be expressly understood that, accompanying drawing is just for the purpose of illustration and description, and not definition is as limitation of the present invention.
Brief description of the drawings
Fig. 1 illustrates according to one or more embodiment, is arranged to the block diagram of the system of oxygen concentration and liquefaction;
Fig. 2 shows the exemplary embodiment of multi-duct conduits part; And
Fig. 3 shows according to being used to of one or more embodiment and is couple to the method that the oxygen channel in the Oxygen liquefier of oxygen concentrator thaws.
Detailed description of the invention
As used herein singulative " one ", " one " and " described " comprise plural form, unless context is clearly pointed out in addition.As used herein, two or more parts or parts are that the statement of " coupling " should represent that (, via one or more mid portions or parts, as long as form link) engage or work together these parts by directly or indirectly.As used herein, " directly coupling " refers to that two elements are directly in contact with one another.As used herein, " coupling regularly " or " fixing " refers to two parts and coupled, and makes to move as one, relative to each other keeps constant orientation simultaneously.
As used herein, word " single " represents that parts are created as single part or unit., comprise that it is not " single " parts or main body that coverlet original creation builds and be coupled in together as the parts of the part of unit.As adopted herein, two or more parts or the parts each other statement of " engagement " should refer to these parts directly or apply each other power by one or more mid portions or parts.As adopted herein, word " quantity " refers to one or be greater than one integer (multiple).
Direction word used herein, such as but not limited to, top, the end, left and right, upper and lower, forward and backward and derivative words, relate to the orientation of the element shown in accompanying drawing, do not form limitations on claims, unless clearly stated therein.
Fig. 1 shows according to the block diagram of the system that is arranged to oxygen concentration and liquefaction 100 of one or more embodiment.As Fig. 1 describes, system 100 comprises user interface 102, controller 104, oxygen concentrator 106, Oxygen liquefier 108 and/or other parts.The description of system 100 is illustrative, instead of restrictive.For example, system 100 can comprise that for describing this technology be the optional feature there is no need.In addition,, although this technology is to describe in the context of oxygen concentration and liquefaction system, concept can be applied to the gas liquefaction system (for example, nitrogen gas liquefaction system) of other type.
User interface 102 is configured to provide the interface between system 100 and user, and user can provide information to system 100 or from system 100 reception information by this interface.This can communication item (being referred to as " information ") can transmit data, result and/or instruction and any other between user and system 10.As used herein, word " user " can refer to that single individuality can be maybe one group of individuality of collaborative work.The example that is suitable for being included in the interface equipment in user interface 102 comprises keypad, button, switch, keyboard, knob, control lever, display screen, touch-screen, loudspeaker, microphone, indicator lamp, audible alarm and printer.In one embodiment, user interface 102 is actual comprises multiple independent interfaces.
The communication technology (wired or wireless) that should be appreciated that other is also expected as user interface 102.For example, the removable memory interface being provided by electronic storage device can be provided user interface 102.In the present embodiment, information can for example, be loaded into system 100 from movable memory equipment (, smart card, flash drive, removable dish etc.), and this movable memory equipment makes the embodiment that user can custom-built system 100.Be applicable to together with system 100 other exemplary input equipment of using and technology as user interface 102 and include but not limited to RS-232 port, RF link, IR link, modem (phone, cable or other).In brief, be anyly expected for user interface 102 for the technology that transmits information with system 100.
Controller 104 is configured to provide information processing capability in system 100.Controller 104 can be couple to one or more parts of system 100 communicatedly.Controller 104 can be configured to the operation of one or more parts of control system 100 and/or the cooperation between them.Like this, controller 104 can comprise digital processing unit, analog processor, be designed to the digital circuit of process information, the analog circuit that is designed to process information, state machine and/or one or more for other mechanism of process information electronically.In certain embodiments, controller 104 comprises and/or is couple to communicatedly electronic storage medium, and this electronic storage medium is configured to the instruction that storage can be carried out by controller 104.Although controller 104 is shown as single entities in Fig. 1, this is only for illustrative purposes.In some embodiments, controller 104 can comprise multiple processing units.These processing units can be physically located in same equipment or computing platform, or controller 104 can represent the processing capacity of multiple equipment of collaborative work.
Oxygen concentrator 106 is configured to from surrounding air (about 78% nitrogen, 21% oxygen, 0.93% argon gas, 0.038% carbon dioxide and other a small amount of gas), generates the gas (for example, the oxygen of 93% pure medical grade) of the oxygen content with rising from the gas of gas cylinder and/or any other source of the gas.In the described embodiment of Fig. 1, oxygen concentrator 106 comprises gas compressor 110, valve 112, one or more pressure-variable adsorption (PSA) sifting bed 114, moisture removal level 116 and/or other parts.The description of this oxygen concentrator 106 is illustrative, instead of restrictive.For example, oxygen concentrator 106 can comprise optional additional components for describing this technology, and such product is as pressure-relief valve and filter.In addition, although this technology is to describe in the context of pressure swing adsorption system, concept can be applied to the gas concentrator of other type, the oxygen generation system of for example pottery and distillation type.
Compressor 110 is configured to provide the gas under the pressure in raising with respect to atmospheric pressure.Gas (for example air) is for example, to obtain from source of the gas (surrounding environment) by gas compressor 110.Gas is introduced into gas compressor 110 via air introduction pipe line 118.Gas compressor 110 provides gas-pressurized by primary air pipeline 120.As non-limiting example, gas compressor 110 can comprise piston compressor, rotary helical-lobe compressor, vane compressor, centrifugal compressor and/or be configured to provide one or more in the miscellaneous equipment of the gas under the pressure in raising with respect to atmospheric pressure.According to some embodiment, the gas-pressurized being provided by gas compressor 110 has the temperature of rising with respect to the gas obtaining by air introduction pipe line 118, because gas compressor 110 has been carried out gas compression.For example, the gas-pressurized being provided by gas compressor 110 can have the temperature of approximately 80 DEG C-90 DEG C, and this depends on the temperature of the gas obtaining by air introduction pipe line 118.
Valve 112 is configured to reboot whole or in part received gas between two or more parts of system 100.As Fig. 1 describes, valve 112 receives gas-pressurized via primary air pipeline 120 from gas compressor 110.In the normal operation period, during generation has the gas of high oxygen concentration, valve 112 direct pressurized gases arrive PSA sifting bed 114 via at least one sifting bed air line 122.In the time that one or more gas lines of system 100 are thawed, valve 112 direct pressurized gases arrive thawing apparatus air line 124.As non-limiting example, valve 112 can and/or be applicable to control valve 112 by hydraulic pressure, pneumatic, manual, solenoid, motor and control with other technology that reboots gas.In certain embodiments, controller 104 pilot valves 112 are to reboot gas.This rebooting can be in response to all or part of obstruction that the gas line in the system of being included in 100 detected.
The admixture of gas in pressure that PSA sifting bed 114 is configured to from receiving via sifting bed air line 122 separates one or more gaseous species.Can according to the molecular characterization of these one or more kinds with the compatibility of sorbing material is separated to this one or more gaseous species.Sorptive material (for example active carbon, silica gel, aluminium oxide, zeolite and/or other suitable material) is used as molecular sieve to be adsorbed on one or more gaseous species under the pressure of rising.For the normally material of selecteed very porous because of their large surface area of sorbing material of PSA system.Utilize these one or more gaseous species make sorptive material saturated wholly or in part after, process changes low pressure into discharge or these one or more kinds of desorb from sorbing material.The gaseous matter of one or more that separate from admixture of gas is exported via oxygen pipeline 126.
For illustrative purposes, can make the forced air receiving via sifting bed air line 122 through the PSA sifting bed that contains adsorbent bed, this adsorbent bed is than adsorption of oxygen absorption nitrogen more consumingly.Part or all of nitrogen will be attracted in PSA sifting bed, and from PSA sifting bed gas out by collecting oxygen.In the time that sifting bed reaches the limit of ability of its absorption nitrogen, thereby it can discharge the nitrogen adsorbing and be reproduced by reducing pressure.Then it be ready to manufacture next circulation of oxygen enrichment.Use two PSA sifting beds to allow the class continuation of object gas to manufacture.Such use also allows so-called isostasy, and the gas being depressurized that wherein leaves a PSA sifting bed is used to partly the 2nd PSA sifting bed be pressurizeed.
According to some embodiment, moisture removal level 116 is configured to remove moisture the gas from receiving from PSA sifting bed 114 via oxygen pipeline 126.In certain embodiments, for cost efficiency and/or other object, do not carry out the further conditioning of the gas from PSA sifting bed 114 to remove moisture.Therefore, in certain embodiments, remove moisture level 116 and save from system 100.Moisture removal level 116 can utilize one or more technology to remove moisture, comprises that film, absorption, absorption and/or other are suitable for removing the technology of moisture from gas.
Oxygen liquefier 108 is configured to generate liquefaction oxygen from gaseous oxygen.Receive gaseous oxygen via oxygen pipeline 126 from oxygen concentrator 106.For example, by reducing the temperature (, to low temperature level) of gaseous oxygen and/or by pressurized gaseous oxygen, can generating liquefaction oxygen from gaseous oxygen.In the embodiment describing at Fig. 1, Oxygen liquefier 108 comprises heat exchanger 128, is included in liquid oxygen holder 130, refrigeration system 134, temperature sensor 136, flow sensor 138 and/or other parts in environment spacer assembly 132.The description of Oxygen liquefier 108 is illustrative and not restrictive.For example, Oxygen liquefier 108 can comprise the other parts that there is no need concerning describing this technology.In addition, here disclosed concept can be applied to the gas liquefaction device of other type.
Heat exchanger 128 is configured to heat to be delivered to another from a medium.Such heat transmission can be used to the gas that liquefaction is carried by oxygen pipeline 126, and/or melts the frozen liquid (for example water) in oxygen pipeline 126.According to one or more embodiment, oxygen pipeline 126 is located in thawing apparatus air line 124, refrigerant lines 140 and/or is configured to carry one or more other pipeline thermo-contacts of fluid.Refrigerant lines 140 is configured to draw heat from oxygen pipeline 126, and in conjunction with refrigeration system 134, refrigerant lines 140 is described in further detail.
Thawing apparatus air line 124 is configured to heat to offer oxygen pipeline 126.Thermo-contact between oxygen pipeline 126, thawing apparatus air line 124 and/or refrigerant lines 140 can be with several Configuration.For example, oxygen pipeline 126, thawing apparatus air line 124 and/or refrigerant lines 140 can be bonded together with co-linear configuration, for example, by welding.As another example, oxygen pipeline 126, thaw air line 124 and/or refrigerant lines 140 can be combined as single parts, for example multi-duct conduits, thus thermo-contact is provided betwixt.Multi-duct conduits part can comprise one or more in oxygen pipeline 126, thawing apparatus air line 124, refrigerant lines 140 and/or other pipeline, and the exemplary embodiment of multi-duct conduits part is described in further detail in conjunction with Fig. 2.
According to some embodiment, the thermo-contact between thawing apparatus air line 124 and oxygen pipeline 126 is extended in the whole length of heat exchanger 128 or in a part for heat exchanger 128.In certain embodiments, a bit from approaching along oxygen pipeline 126 of thermo-contact between thawing apparatus air line 124 and oxygen pipeline 126 is (at this some place, the temperature of oxygen pipeline 126 is confirmed as being less than the dew point of the oxygen in oxygen pipeline 126) start, and finish at the point downstream place along oxygen pipeline 126.
It should be noted that in certain embodiments, heat exchanger 128 is implemented other technology heat is delivered to oxygen pipeline 126 and transmits the heat from oxygen pipeline 126.In certain embodiments, for example, by electrical heating coil or rod, heat is offered to oxygen pipeline 126.In certain embodiments, gel or other fluid flow through on oxygen pipeline 126, to provide heat to draw heat to oxygen pipeline 126 or from oxygen pipeline 126.The example providing about heat exchanger 128 is not herein restrictive, because other method and technology are expected for heat being delivered to oxygen pipeline 126 and transmitting the heat from oxygen pipeline 126.
For example, once the liquid freezing in oxygen pipeline 126 (water) is melted, the liquid obtaining can be removed.In various embodiments, liquid (being water) can be drained by gravity, by gas blow oxygen pipeline 126 is eliminated, evaporated, and/or use is suitable for discharging the other technologies of aqueous water and being removed from oxygen pipeline 126.
Liquid oxygen holder 130 is configured to storing liquefied gas.In some embodiments, manufactured by oxygen concentrator 106 and the oxygen rich gas that liquefied by Oxygen liquefier 108 is stored by liquid oxygen holder 130.The liquid gas being stored by liquid oxygen holder 130 can be recovered and for various objects, for example, for medical application.Liquid oxygen holder 130 can comprise vacuum flask or Dewar and/or be suitable for storing other container of material at low temperatures.
Environment spacer assembly 132 is configured to heat exchanger 128, liquid oxygen holder 130 and/or other parts from surrounding environment to carry out heat isolation.According to some embodiment, environment spacer assembly 132 can comprise and is configured to the vacuum of receiving heat-exchanger 128, liquid oxygen holder 130 and/or other parts or by the volume of partially draining.
Refrigeration system 134 is configured to cold-producing medium to carry out cooling, and makes refrigerant circulation pass heat exchanger 128, to heat is drawn out from oxygen pipeline 126.Carry out heat from the drawing of oxygen pipeline 126, with the gas that liquefies and carried by oxygen pipeline 126.Refrigeration system 134 can comprise the refrigeration compressor (not describing) that is configured to the circulation that drives cold-producing medium.Refrigeration system 134 can comprise and be configured to cooling or otherwise process various other parts (not describing) of above-mentioned cold-producing medium, for example condenser coil, fan, heat separator, cold separator, filter, drier and/or for cooling or otherwise process miscellaneous part one or more of cold-producing medium.The cold-producing medium being cooled can be passed to heat exchanger 128 via coolant lines 140 from refrigeration system 134, and spent cold-producing medium can turn back to refrigeration system 134 via refrigerant lines 140 from heat exchanger 128.
Temperature sensor 136 is configured to produce the signal that can be used for determining temperature.In certain embodiments, temperature sensor 136 uses to determine the temperature at the specified point place in heat exchanger 128 together in conjunction with controller 104.Temperature sensor 136 can be used to determine when drop to below the dew point of the gas being carried by oxygen pipeline 126 in the temperature of some positions along oxygen pipeline 126.Determining like this can be utilized and realize as basis that concentrated and liquefaction becomes thawing of oxygen pipeline 126 from oxygen by the duty of system 100 by controller 104, and vice versa.Although be depicted as discrete component in Fig. 1, temperature sensor 136 can represent one or more temperature sensors of the one or more positions that are positioned in whole system 100.As non-limiting example, temperature sensor 136 can comprise thermal resistor, thermometer and/or be configured to determine the miscellaneous equipment of temperature.
Flow sensor 138 is configured to produce the signal of the flow velocity that can be used for the fluid of determining process conduit.In certain embodiments, flow sensor 138 uses to determine by the liquefaction of oxygen pipeline 126 or the flow velocity of gaseous state oxygen in conjunction with controller 104 together.Determining like this can complete by the pressure in monitoring oxygen pipeline 126.Flow velocity can be utilized to realize the duty of system 100 to concentrate and liquefy from oxygen as basis from controller 104 and become thawing of oxygen pipeline 126, and vice versa.According to some embodiment, finally cause oxygen pipeline 126 internal pressures to increase by all or part of obstruction of freezing the oxygen pipeline 126 that water causes, but it cause pressure decreased at first.Such pressure decreased can be used to the duty of trigger controller 104 change systems 100.Although be depicted as discrete component in Fig. 1, flow sensor 138 can represent to be positioned in one or more flow sensors of the one or more positions in whole system 100.As non-limiting example, flow sensor 138 can comprise pressure sensor, rotating potentiometer, speedometer, blade flowmeter sensor, heated filament sensor, cold silk sensor, toll bar Vortex sensor, thin film sensor, laminar flow element and/or be configured to determine other device of rate of flow of fluid.
According to some embodiment, the time that continues one section of predetermined length thaws to oxygen pipeline 126.At this moment, after section, Oxygen liquefier 108 can continue the oxygen that liquefaction is received by oxygen pipeline 126.In certain embodiments, thaw and liquefy between have time-out.Carrying out after thawing cycle, if detect that while obstruction, system 100 can be initiated another thawing cycle.In certain embodiments, based on as stop in conjunction with the temperature (or other parts of heat exchanger 128) of the definite oxygen pipeline 126 of temperature sensor 136 routine of thawing.
(in Fig. 1, do not describe) in certain embodiments, valve 112 is between PSA sifting bed 114 and Oxygen liquefier 108.In such embodiments, valve 112 is configured to completely or partially reboot the oxygen arrival thawing apparatus air line 124 of being exported by PSA sifting bed 114.Then the oxygen being carried by thawing apparatus air line 124, being rebooted can be used to heat to offer the oxygen pipeline 126 in heat exchanger 128.According to some embodiment, heater (not describing) can be included in system 100, to heat the gas being carried by thawing apparatus air line 124.
Fig. 2 shows the exemplary embodiment of multi-duct conduits part.More specifically, the multi-duct conduits part 202, multi-duct conduits part 204, multi-duct conduits part 206, multi-duct conduits part 208 and/or other multi-duct conduits part that are configured to carry two or more fluids can be included in (referring to Fig. 1) in heat exchanger 128, so that the heat transmission between thawing apparatus air line 124, oxygen pipeline 126, refrigerant lines 140 and/or other pipeline.The description of multi-duct conduits part 202,204,206 and/or 208 is illustrative, instead of restrictive.For example, have two conduits although multi-duct conduits part 202,204,206 and/or 208 is depicted as in Fig. 2, multi-duct conduits part 202,204,206 and/or 208 can comprise two or more conduits.
Multi-duct conduits part 202 shows thawing apparatus air line 124 and oxygen pipeline 126 is joined together to form betwixt thermo-contact.Such joint can be realized by other technology of welding and/or be suitable for engaging gas line.Multi-duct conduits part 204 shows thawing apparatus air line 124 and oxygen pipeline 126 and is formed as having the single parts of rectangular profile.Multi-duct conduits part 206 shows thawing apparatus air line 124 and oxygen pipeline 126 and is formed as having the single parts of cartouche.Multi-duct conduits part 208 shows coaxial configuration, and wherein inner conduit is thawing apparatus air line 124 or oxygen pipeline 126, and exterior tubing is another one.
Fig. 3 shows according to being used to of one or more embodiment and is couple to the method 300 that the oxygen pipeline in the Oxygen liquefier of oxygen concentrator thaws.The operation of the method 300 of below introducing is illustrative.In some embodiments, method 300 can utilize one or more additional operations of not describing to complete, and/or does not utilize discussed one or more operations to complete.In addition, the order of operation shown in Fig. 3 and method 300 described below is not restrictive.
In some embodiments, can be in one or more treatment facilities and/or for example, by one or more treatment facilities (digital processing unit, analog processor, the digital circuit that is designed to process information, the analog circuit that is designed to process information, state machine and/or for electronically other mechanism of process information).One or more treatment facilities can comprise in response to the instruction being stored in electronically on electronic storage medium, one or more equipment of some or all operations of execution and/or implementation method 300.One or more treatment facilities can comprise and are configured to be specifically designed the one or more equipment for one or more operations of manner of execution 300 by hardware, firmware and/or software.
In operation 302, use one or more sifting beds from air, to extract oxygen, this air obtains from surrounding environment.According to some embodiment, oxygen concentrator 106 and/or parts executable operations 302 wherein.
In operation 304, the oxygen extracting at one or more sifting beds place is passed to liquid oxygen holder via oxygen pipeline.In certain embodiments, oxygen pipeline 126 can be so that be transferred to liquid oxygen holder by oxygen from one or more sifting beds.The oxygen extracting at described one or more sifting beds place is liquefied between one or more sifting beds and liquid oxygen holder.According to some embodiment, heat exchanger 128 liquefies to the oxygen extracting at one or more sifting beds place.
In operation 306, manufacture the flow velocity of speed or gaseous state oxygen based on liquid oxygen, detect all or part of obstruction in oxygen pipeline, wherein all or part of obstruction is to cause by freezing water.According to each embodiment, controller 104 combines with executable operations 306 with temperature sensor 136 and/or flow sensor 138.
In operation 308, in response to all or part of obstruction detecting in oxygen pipeline, valve be triggered with by air from compressor send (route) to the air line of oxygen pipeline thermo-contact, instead of send to one or more sifting beds.According to some embodiment, valve 112 is triggered by controller 104, so that air is sent to thawing apparatus air line 124 from gas compressor 110, instead of PSA sifting bed 114.
In operation 310, use the heat being provided by air line, to thawing in oxygen pipeline, to melt the water that freezes in oxygen pipeline.In certain embodiments, oxygen pipeline is thawed and comprises via thawing apparatus air line 124 and carry the air from gas compressor 110, make heat be passed to oxygen pipeline 126 from thawing apparatus air line 124, this is because the thermo-contact between thawing apparatus air line 124 and oxygen pipeline 126 causes.
In the claims, any Reference numeral between bracket should not be interpreted as limiting this claim.Word " comprises " or " comprising " do not get rid of element element and step listed in claim or the existence of step.In the equipment claim of having enumerated several modules, some in these modules can be implemented with the hardware of same by one.The word " one " using before element or " one " are not got rid of and are had multiple such elements.In any equipment claim of having enumerated several modules, some in these modules can be implemented with the hardware of same by one.Some element is documented in the combination that the fact in mutually different dependent claims does not show to use these elements.
Although for illustrative purposes, based on thinking at present the most practical and preferred embodiment, describe the present invention in detail, but be to be understood that, these details are only for this object, and the present invention is not limited to the disclosed embodiments, on the contrary, the invention is intended to cover amendment and equivalent arrangements in the spirit and scope of claims.For example, should be understood that, the present invention's expection, in possible degree, one or more features of any embodiment can be combined with one or more features of any other embodiment.

Claims (15)

1. for operating a method for oxygen concentrator and liquefier system (100), described method comprises:
Use one or more sifting beds (114) to extract oxygen from be obtained from the air of surrounding environment;
The oxygen extracting at described one or more sifting beds place is delivered to liquid oxygen holder (130) via oxygen pipeline (126), and the described oxygen extracting at described one or more sifting beds place is liquefied between described one or more sifting beds and described liquid oxygen holder; And
Described oxygen pipeline is thawed, to melt the frozen liquid in described oxygen pipeline.
2. the method for claim 1, also comprise the flow velocity of manufacturing speed or gaseous state oxygen based on liquid oxygen, detect all or part of obstruction in described oxygen pipeline, described all or part of obstruction is caused by frozen liquid, wherein, in response to described all or part of obstruction being detected, carry out thawing that described oxygen pipeline is carried out.
3. the method for claim 1, wherein, described oxygen pipeline is thawed and comprises the air from compressor via air line (124) carrying, described air line and described oxygen pipeline carry out thermo-contact, make heat be passed to described oxygen pipeline from described air line, so that described oxygen pipeline is thawed, thereby melt the frozen liquid in described oxygen pipeline.
4. method as claimed in claim 3, also comprise in response to all or part of obstruction detecting in described oxygen pipeline, trigger valve (112) so that air is sent to described air line from described compressor, instead of sending to described one or more sifting bed, described all or part of obstruction is caused by frozen liquid.
5. method as claimed in claim 3, wherein, described thermo-contact between described air line and described oxygen pipeline from the dew point of the oxygen in the temperature of described oxygen pipeline is less than described oxygen pipeline along some vicinity of described oxygen pipeline, and finish at the point downstream place along described oxygen pipeline.
6. an oxygen concentrator and liquefier system (100), be configured to thaw to being included in one or more oxygen pipeline, and described system comprises:
One or more sifting beds (114), it is configured to extract oxygen the air from being obtained from surrounding environment;
Liquid oxygen holder (130), it is configured to be stored in the oxygen being liquefied that described one or more sifting beds place extracts;
Oxygen pipeline (126), it is configured to provide the fluid between described one or more sifting bed and described liquid oxygen holder to be communicated with; And
Heater (128), it is configured to described oxygen pipeline to thaw, to melt the frozen liquid in described oxygen pipeline.
7. system as claimed in claim 6, also comprise compressor (110), described compressor (110) is configured to the air obtaining from surrounding environment to provide to described one or more sifting beds, wherein, described heater comprises air line (124), described air line (124) is configured to the air of carrying from described compressor, described air line and described oxygen pipeline carry out thermo-contact, make heat be passed to described oxygen pipeline from described air line, to described oxygen pipeline is thawed, thereby melt the frozen liquid in described oxygen pipeline.
8. system as claimed in claim 7, also comprise controller (104), described controller (104) is configured to manufacture based on liquid oxygen the flow velocity of speed or gaseous state oxygen, detects all or part of obstruction in described oxygen pipeline, and described all or part of obstruction is caused by frozen liquid.
9. system as claimed in claim 8, also comprise valve (112), described valve (112) is configured to the described all or part of obstruction in described oxygen pipeline be detected in response to described controller, air is sent to described air line from described compressor, instead of send to described one or more sifting bed.
10. system as claimed in claim 7, wherein, thermo-contact between described air line and described oxygen pipeline from the dew point of the oxygen in the temperature of described oxygen pipeline is less than described oxygen pipeline along some vicinity of described oxygen pipeline, and finish at the point downstream place along described oxygen pipeline.
11. 1 kinds of oxygen concentrators and liquefier system (100), the oxygen connectivity module being configured to being included in is wherein thawed, and described system comprises:
Extraction module (106), it extracts oxygen for the air from being obtained from surrounding environment;
Storage module (130), the oxygen being liquefied that it extracts for being stored in described extraction module place;
Oxygen connectivity module (126), it is for providing the fluid between described extraction module and described storage module to be communicated with; And
Heating module (128), it is for described oxygen connectivity module is thawed, to melt the frozen liquid in described oxygen connectivity module.
12. systems as claimed in claim 11, also comprise compressor module (110), described compressor module (110) is for being provided to described extraction module by the air obtaining from surrounding environment, wherein, described heating module comprises air communication module (124), described air communication module (124) is for carrying the air from described compressor module, described air communication module and described oxygen connectivity module are carried out thermo-contact, make heat be passed to described oxygen connectivity module from described air communication module, to described oxygen connectivity module is thawed, thereby melt the frozen liquid in described oxygen connectivity module.
13. systems as claimed in claim 12, also comprise controller module (104), described controller module (104) is manufactured the flow velocity of speed or gaseous state oxygen based on liquid oxygen, detect all or part of obstruction in described oxygen connectivity module, described all or part of obstruction is caused by frozen liquid.
14. systems as claimed in claim 13, also comprise air sending module (112), described air sending module (112) detects the described all or part of obstruction in described oxygen connectivity module in response to described controller module, air is sent to described air communication module from described compressor module, instead of send to described extraction module.
15. systems as claimed in claim 12, wherein, thermo-contact between described air communication module and described oxygen connectivity module is less than near a bit beginning the along described oxygen connectivity module of the dew point of the oxygen in described oxygen connectivity module from the temperature of described oxygen connectivity module, and finishes at the point downstream place along described oxygen connectivity module.
CN201280013173.6A 2011-03-14 2012-03-09 Oxygen concentrator and liquefier system and operational approach thereof Expired - Fee Related CN103857448B (en)

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